EN 4157:2024
(Main)Aerospace series - Rod end, with self-aligning double row ball bearing and threaded shank in steel - Dimensions and loads, Inch series
Aerospace series - Rod end, with self-aligning double row ball bearing and threaded shank in steel - Dimensions and loads, Inch series
This document specifies the characteristics of adjustable rod-ends with self-aligning double row ball bearing and threaded shank in steel.
They consist of:
- a rod-end comprising:
- either seals or shields;
- an optional longitudinal groove for locking purpose;
- an inner ring with balls.
These rod-ends are intended for use with flight control rods or rods for aerospace structures.
Luft- und Raumfahrt - Ösenköpfe mit zweireihigem Pendelkugellager und Gewindeschaft aus Stahl - Maße und Belastungen; Inch-Reihe
Dieses Dokument legt die Eigenschaften für einstellbare Ösenköpfe mit zweireihigem Pendelkugellager und Gewindeschaft aus Stahl fest.
Diese bestehen aus:
— einem Ösenkopf, der:
— mit Dicht- oder Deckscheiben ausgerüstet ist;
— eine Längsnut zur Sicherung aufweisen kann;
— einem Innenring mit Kugeln.
Diese Ösenköpfe sind für Bediengestänge für Flugsteuerungen oder für Strukturstangen von Luftfahrzeugen vorgesehen.
Série aérospatiale - Embout à roulement à rotule sur deux rangées de billes et tige filetée en acier - Dimensions et charges, série en inches
Le présent document spécifie les caractéristiques des embouts réglables à roulement à rotule sur deux rangées de billes et tige filetée en acier.
Ils sont constitués :
- d'un corps d'embout comprenant :
- soit des joints d'étanchéité, soit des flasques de protection,
- éventuellement une gorge longitudinale de verrouillage ;
- d'une bague intérieure sur billes.
Ces embouts sont destinés aux bielles pour commandes de vol ou aux bielles de structures aérospatiales.
Aeronavtika - Konec palice s samonastavljivim dvorednim krogličnim ležajem in navojnim steblom iz jekla - Dimenzije in obremenitve, palčne mere
Ta dokument določa značilnosti prilagodljivih koncev palic s samonastavljivim dvorednim krogličnim ležajem in navojnim steblom iz jekla.
Sestavljene so iz:
– končnika, ki vključuje:
– tesnila ali ščitnike;
– izbirni vzdolžni utor za zaklepanje;
– notranji obroč s kroglicami.
Ti konci palic so namenjeni za uporabo s kontrolnimi ali drugimi ročicami v letalstvu.
General Information
Overview - EN 4157:2024 (Aerospace series)
EN 4157:2024 specifies the dimensions, loads and characteristics for adjustable aerospace rod ends with a self‑aligning double‑row ball bearing and a threaded steel shank (Inch series). These rod ends are designed for use on flight control rods and other aerospace structural rods. The standard defines geometry, tolerances, materials, surface treatments, load and torque limits, sealing options and marking/quality requirements for consistent manufacture and procurement.
Key topics and technical requirements
- Scope and configuration
- Adjustable rod‑ends with inner ring and balls, either seals or shields, and an optional longitudinal groove for locking.
- Inch‑series dimensions and detailed tolerance tables (dimension drawings and Table 1).
- Materials and heat treatment
- Rod‑end body: steel per EN 2135, case‑hardened with raceway hardness ≥ 58 HRC and overall strength R ≥ 830 MPa.
- Inner ring and rolling elements: EN 2031 steel.
- Seals: PTFE or glass‑reinforced PTFE; shields and retaining rings: corrosion‑resisting materials.
- Surface treatment & finish
- Cadmium plating and chromating per EN 2133 (10–20 μm on outer surfaces; threads 5–10 μm).
- Rolling elements and raceways: surface roughness R = 0.2 μm (prior to plating).
- Loads, torques and clearances
- Permissible static radial/axial loads, starting torques and clearances are specified (see Table 2); definitions/testing reference EN 2067:1996.
- Retention of seals/shields tested per EN 2067 (test torque min. 5.0 Nm for listed diameter codes).
- Lubrication and temperature
- Approved greases: very high pressure ester type (code A) operational to −73 °C to +121 °C, or synthetic hydrocarbon (code B) −54 °C to +177 °C.
- Designation, marking and quality
- Marking per EN 2424. Manufacturers must operate an approved aerospace production organization and quality system (e.g., EN 9100); qualification per EN 9133 when applicable.
Applications and who uses EN 4157:2024
- Aerospace component manufacturers and fastener suppliers specifying or producing rod ends for flight controls and structural linkages.
- Aircraft designers and systems engineers requiring standardized dimensions and load ratings for linkage design.
- Procurement, quality assurance and certification teams verifying conformity, marking and traceability.
- Maintenance and overhaul organizations selecting replacements consistent with aerospace standards.
Related standards
- EN 2067:1996 (rod end technical specification & testing)
- EN 2133 (cadmium plating)
- EN 2135, EN 2031 (material specifications)
- EN 2424 (marking)
- EN 9100 / EN 9133 (quality & qualification)
Keywords: EN 4157:2024, rod end, self‑aligning double row ball bearing, threaded shank, inch series, aerospace dimensions and loads, flight control rods, cadmium plating.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2024
Aeronavtika - Konec palice s samonastavljivim dvorednim krogličnim ležajem in
navojnim steblom iz jekla - Dimenzije in obremenitve, palčne mere
Aerospace series - Rod end, with self-aligning double row ball bearing and threaded
shank in steel - Dimensions and loads, Inch series
Luft- und Raumfahrt - Ösenköpfe mit zweireihigem Pendelkugellager und Gewindeschaft
aus Stahl - Maße und Belastungen; Inch-Reihe
Série aérospatiale - Embout à roulement à rotule sur deux rangées de billes et tige
filetée en acier - Dimensions et charges, série en inches
Ta slovenski standard je istoveten z: EN 4157:2024
ICS:
49.035 Sestavni deli za letalsko in Components for aerospace
vesoljsko gradnjo construction
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4157
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2024
EUROPÄISCHE NORM
ICS 49.035
English Version
Aerospace series - Rod end, with self-aligning double row
ball bearing and threaded shank in steel - Dimensions and
loads, Inch series
Série aérospatiale - Embout à roulement à rotule sur Luft- und Raumfahrt - Ösenköpfe mit zweireihigem
deux rangées de billes et tige filetée en acier - Pendelkugellager und Gewindeschaft aus Stahl - Maße
Dimensions et charges, série en inches und Belastungen; Inch-Reihe
This European Standard was approved by CEN on 12 May 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4157:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and symbols . 4
3.1 Terms and definitions . 4
3.2 Symbols . 5
4 Requirements . 5
4.1 Dimensions, tolerances and masses . 5
4.2 Surface roughness . 5
4.3 Materials . 5
4.4 Surface treatment . 5
4.5 Loads, starting torques and clearances . 10
4.6 Retention of seals or shields . 11
4.7 Temperature range and lubricant . 11
5 Designation . 11
6 Marking . 12
7 Technical specification . 12
8 Quality management systems . 12
Bibliography . 13
European foreword
This document (EN 4157:2024) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2025, and conflicting national standards shall
be withdrawn at the latest by January 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
1 Scope
This document specifies the characteristics of adjustable rod-ends with self-aligning double row ball
bearing and threaded shank in steel.
They consist of:
— a rod-end comprising:
— either seals or shields;
— an optional longitudinal groove for locking purpose;
— an inner ring with balls.
These rod-ends are intended for use with flight control rods or rods for aerospace structures.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2031, Aerospace series — Steel 102Cr6 (1.2067) — Hardened and tempered — Bars
EN 2067:1996, Aerospace series — Rod ends with self-aligning ball bearings — Technical specification
EN 2133, Aerospace series — Cadmium plating of steels with specified tensile strength ≤ 1 450 MPa,
copper, copper alloys and nickel alloys
EN 2135, Aerospace series — Steel FE-PL61 — Carburized, hardened and tempered — Bar —
De ≤ 40 mm
EN 2424, Aerospace series — Marking of aerospace products
ISO 3161, Aerospace — UNJ threads — General requirements and limit dimensions
ISO 3353-1, Aerospace — Lead and runout threads — Part 1: Rolled external threads
TR 4475 , Bearings and mechanical transmissions for airframe applications — Vocabulary
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in
...
Frequently Asked Questions
EN 4157:2024 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Rod end, with self-aligning double row ball bearing and threaded shank in steel - Dimensions and loads, Inch series". This standard covers: This document specifies the characteristics of adjustable rod-ends with self-aligning double row ball bearing and threaded shank in steel. They consist of: - a rod-end comprising: - either seals or shields; - an optional longitudinal groove for locking purpose; - an inner ring with balls. These rod-ends are intended for use with flight control rods or rods for aerospace structures.
This document specifies the characteristics of adjustable rod-ends with self-aligning double row ball bearing and threaded shank in steel. They consist of: - a rod-end comprising: - either seals or shields; - an optional longitudinal groove for locking purpose; - an inner ring with balls. These rod-ends are intended for use with flight control rods or rods for aerospace structures.
EN 4157:2024 is classified under the following ICS (International Classification for Standards) categories: 49.035 - Components for aerospace construction. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 4157:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
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